1 . 如图,
是
的高,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0efbe54a4a5c727cc7f3b533b05d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383839a3cbbb8a97941b6a40d6d340ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72511f149a1b13af02d0e1421d3a63a5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-12更新
|
210次组卷
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5卷引用:河北省沧州市2022-2023学年九年级上学期期末考试数学试题
河北省沧州市2022-2023学年九年级上学期期末考试数学试题山东省泰安市肥城市汶阳镇初级中学2022-2023学年九年级下学期3月月考数学试题第23章 解直角三角形 23.2 解直角三角形及其应用沪科版九年级上册课后作业湖南省衡阳市衡南县栗江镇隆市初级中学2023-2024学年九年级下学期期中数学试题(已下线)第15讲 解直角三角形(九大题型)-【暑假自学课】2024年新九年级数学暑假提升精品讲义(沪教版)
名校
2 .
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9aca6dc1eab78ab15c0b9ba5f076026.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-08更新
|
172次组卷
|
4卷引用:重庆市南岸区2021-2022学年九年级上学期期末数学试题
3 . 如图,在
中,
,
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d2eae98e1683fbb9533584450dd696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://img.xkw.com/dksih/QBM/2023/2/1/3165559426260992/3166222454128640/STEM/74c0848e1c054f029d458155e2a8607c.png?resizew=168)
您最近一年使用:0次
4 . 如图,在正方形
中,点
、
分别在边
、
上,连接
、
,过点
作
交
于点
,
交
于点
,连接
,若
,且
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/d6d4ab5b-6055-4985-8e7d-865f9b34348a.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ba3109534912d40dc277aa0c2a8fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336ef1ac24b20d9a4601d72928f58d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af83aa2410d6ab5d74a984b8fd745cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78330d24bb5f61954df74c994a2caf25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3b9fe94b261d634f275a92d8b8cd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c9a66e7f0a5d635fd6d3af0c829687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/d6d4ab5b-6055-4985-8e7d-865f9b34348a.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 如图,
的顶点是正方形网格的格点,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/d213266c-ea08-4118-a437-56c452600464.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/d213266c-ea08-4118-a437-56c452600464.png?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-01-26更新
|
130次组卷
|
4卷引用:黑龙江省鸡西市密山市2021-2022学年九年级上学期期末数学试题
黑龙江省鸡西市密山市2021-2022学年九年级上学期期末数学试题浙江省金华市金东区2022-2023学年九年级上学期期末数学试题(已下线)专题07 锐角三角函数相关五类题型-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(浙教版)(已下线)专题02 解直角三角形(六大类型)(题型专练)-2023-2024学年九年级数学下册《知识解读·题型专练》(浙教版)
6 . 如图,在
中,
,
,
,则
的值是( )
![](https://img.xkw.com/dksih/QBM/2023/1/3/3144797650067456/3160305162903552/STEM/2d5e61becc40438d9f0bb85578acdbf9.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0f5353b4b4a463dffcef43db49ff3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd0c00f62c22e90e7d542a2f8dd83d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36a1938df65db2b68bf7595b97bafa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c856ee25f1d1b995e9fca2bdb56e1a.png)
![](https://img.xkw.com/dksih/QBM/2023/1/3/3144797650067456/3160305162903552/STEM/2d5e61becc40438d9f0bb85578acdbf9.png?resizew=171)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . (1)【问题呈现】
如图1,
和
都是等边三角形,连接
,
.易知
_________.
(2)【类比探究】
如图2,
和
都是等腰直角三角形,
.连接
,
.则
_________.
(3)【拓展提升】
如图3,
和
都是直角三角形,
,且
.连接
,
.
①求
的值;
②延长
交
于点
,交
于点
.求
的值.
如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d698ee39cd00a9b6384e0c4897a055a.png)
(2)【类比探究】
如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c2425db34d83dbe44f3ee3d2c5439b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d698ee39cd00a9b6384e0c4897a055a.png)
(3)【拓展提升】
如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c2425db34d83dbe44f3ee3d2c5439b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822765a2749e69de3f630c456c554cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9af91834644b94e1b023b33e15a0644.png)
②延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008a13558fdf96dc45178a6e49a94399.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/d9ea8f34-0f91-4de5-9f24-1116c826416d.png?resizew=436)
您最近一年使用:0次
2023-01-17更新
|
489次组卷
|
6卷引用:山东省济南市槐荫区2022-2023学年九年级上学期期末数学试题
8 . 如图,在
中,
,
于点
,
为
上一点,使得
.若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/b51b889d-5bb0-48ac-bf02-75d4e1ce5d35.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934a9508c176f44bf58f88715bd98f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2696cf1d751d2b022fac7740bd216809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fa1ecc203633d4b5e237f5667e7116.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/b51b889d-5bb0-48ac-bf02-75d4e1ce5d35.png?resizew=177)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图,将矩形
沿
折叠,使点D落在点B上,点C落在点
处,点Р为折痕
上的任一点,过点Р作
,垂足分别为G、H,若
,
,
则下列结论正确的有_______ (填正确结论的序号)①
②
的面积是
③
④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284d2eeafe2185ae50f1397d8717fe82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f52b96ec999ba7c3ecf04e13aa91bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615f79bebff50155064e03610a1a9348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e83e36ce4aa2209061a6e0a26deac67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f8f1582eed1e20e0cedac69efb5269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2f6e3e8845e95d5a7d569b8cd54f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448d8ac56bd1053b55f5399c07457ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c42228d9ba4fe3bae7d68ac7c5935d0.png)
![](https://img.xkw.com/dksih/QBM/2022/12/20/3134972187451392/3152558077370368/STEM/b39bbf01daa74cdaa1db696d28d84182.png?resizew=156)
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10 . 如图,在
中,
,
,
.那么
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/57514550-c691-496e-8203-af5a7f5cad2f.png?resizew=116)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4066ed8dde07a00665ad52a5d15c7531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e3fc39d2b508cc1cae769a5e7266c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/57514550-c691-496e-8203-af5a7f5cad2f.png?resizew=116)
A.![]() | B.![]() | C.![]() | D.![]() |
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